CN201646068U - Anti-fall pen - Google Patents

Abstract

The utility model relates to an anti-fall pen. A telescopic is additionally arranged on the pen-holding point. When the pen is held to write, the finger force acts on the fulcrum of a telescopic device lever. When the telescopic device is extended, the refill is pushed out to use. When the pen accidentally falls down, the telescopic device is not applied by force after being loosened by hands, the telescopic device is ejected out by an inner spring, the refill is free from the push force, and the refill is ejected back to the pen casing by the spring sleeved on the nib, thereby protecting the refill and nib.

Description

Antibreaking pen

Technical field

The utility model is a kind of pen that is used to write, and can prevent that accident from dropping and the situation that causes the pen core nib to be broken.

Background technology

At present free ink pen on the market mainly is made up of a shell and a pen core, can directly write after pushing cap aside, and be more convenient.Weak point is, when outside the meaning of a passage from hand or after other eminences dropped, the pen core nib was easy to be broken under the situation that lacks the cap protection, bring inconvenience and waste.

Summary of the invention

In order to solve the problem that the pen core nib is broken in unexpected situation easily, the utility model provides a kind of Antibreaking pen.This can effectively protect the pen core nib on the basis that does not influence writing quality, can accomplish that hundred cannot not fall mashedly.

The technical scheme that its technology that solves the utility model adopts is: the place of holding a pen at a free ink pen implants a scalable device, when holding a pen, the power that expansion bend is pointed and extending, driving pen core stretches out outside window, expansion bend does not stress after decontroling hand, be contraction state, this moment, pen core was not taken back in the shell by thrust.This just can reach does not influence protection pen core nib when writing.

Usefulness of the present utility model: owing to added a scalable device, under not influencing the situation of writing,, can play need not cap and can prevent that also the pen core nib from falling mashed effect as occurring dropping outside the meaning of a passage at the place of holding a pen.This technology can be used on most of pen and plants, moreover, can reach the pen holding posture of adjusting the people by the position of adjusting expansion bend.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified

Fig. 1 is part on the shell, and there is the outer tooth that turns to the lower end. Fig. 2 is a shell interlude both section of holding a pen place, turn to tooth in the upper end open place has, turn to tooth outside the lower ending opening place has, A is openwork part and the right symmetry, 1., 2. be used for reducing adversary's pressure and rubber or the other materials of the frictional force that increases the adversary for being installed in openwork part. Fig. 3 is the side view of Fig. 2, and the upper end holding a pen the place has recessed section with openwork part at same vertical straight line, the end that length is turned to tooth in being. Fig. 4 is a shell front end nib, a built-in spring, and the slightly larger in diameter of spring is in the pen core nib. Fig. 5 is pen core, 1. is salient point among the figure, can block the spring that is enclosed within on the nib. 2. be the pen core nib, i.e. the following part of salient point. 3. be a pen core pole, i.e. the above part of salient point. Fig. 6 is the expansion bend contraction state, and scalable device is made up of the annulus of being ined succession by two levers. Fulcrum is a, b, but two lever move left and right, and a pen core pole can pass two annulus. Slightly different from lower annulus is that upper annulus both sides have salient point, and salient point is in being on the same vertical straight line with two levers respectively, and this just consists of a figure that is similar to rhombus. 1. 2. being the identical baffle plate of two shapes, respectively is semicolumn, tightly is bonded at respectively a, and the lever of the above part of b two fulcrums, bottom inverted triangle be sticking fixing on the lever not. At baffle plate recess on one side spring is arranged. The baffle plate below is del, is in order not make the infinitely upper contracting of expansion bend. As calculated, will protect the then maximum 2arcsin (2L-l) of two lever angulations/2L of nib in the situation of error-free, L is lever length, and l is pen core nib length. Fig. 7 is the expansion bend elongation state, and two baffle plates synthesize cylinder, and then two levers respectively become 180 degree angles, and a pen core pole can pass this cylinder. The recess spring is in confined state simultaneously. Fig. 8 ABCD is assembling process figure.

The specific embodiment

Expansion bend is put into from the upper end that holds a pen, made the ring salient point of going up of expansion bend partly be absorbed in recessed section of the place's upper port that holds a pen, rotate to prevent expansion bend.At this moment, the top lever of expansion bend is positioned at the hollow out section, and the lower part lever is positioned at below the openwork part, as figure (8) A, and then the place's of a holding a pen upper port and a shell top button is closed, fixedly above the expansion bend, as figure (8) B.When lever is under pressure only elongation downwards but not both sides extend simultaneously, lower opening is put into pen core from holding a pen outside, then the salient point of pen core is stuck on the following ring of expansion bend, spring is set on the pen core nib again, button advances a shell nib, as scheming (8) C.We all need certain grip in use any pen, the pressure that the utility model utilizes this a part of power to turn to the expansion bend balance pivot just makes the expansion bend elongation, at this moment, because the utility model fixedly encircles on the expansion bend, cause the expansion bend can only be simultaneously extrapolated the pen core nib to protracting, the spring of wedging ring on nib be used to write.When expansion bend was pushed down by grip, because baffle effect, the great achievement angle of two levers was 180 degree, purpose is in order to reduce the pressure of hand, when writing, the pen core nib has backward an active force, and two levers become 180 degree all to act on pen core nib active force backward on the shell.Finger then only needs the power of a spring on the compression baffle plate.As figure (8) D.When finger unclamped, the lever that connects expansion bend was installed in the spring that does not stress on the baffle plate and flicks.Because the thrust at the protruding place of pen core has been cancelled, pen core also is enclosed in spring on the nib and rebounds in the shell as figure (8) C.The utility model just because of the power of removing after, pen core these characteristics in the shell of at once withdrawing are not influencing under the situation of writing so can reach, effectively the pen core of the unexpected pen of dropping of protection.

Claims (3)

1. Antibreaking pen comprises a shell hold a pen place and scalable device figure, it is characterized in that: at a shell scalable device of the inner implantation in place that holds a pen

2. according to right 1 described a kind of Antibreaking pen, it is characterized in that: the described place of holding a pen is a section an of shell, about the hollow out section is arranged, described scalable device is made up of two annulus that connected by two levers, two levers are distributed in two of annulus, but move left and right, fulcrum are the mid point of lever, just two levers are divided into four sections, between two levers baffle plate is arranged, spring is arranged on the baffle plate, and whole expansion bend becomes the diamond shaped of symmetry, and symmetry axis is the straight line at two ring places, the center of circle.

3. according to right 1 described a kind of Antibreaking pen, it is characterized in that: expansion bend is implanted the place that holds a pen from the upper port that holds a pen, then a shell top and the part button that holds a pen are closed, put into pen core from a shell front end again, putting nib on the last button of little spring on the pen core nib.

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